An Essay on the Strength and Stress of Timber

area of tension avoirdupois beam fixed Breadth in inches breaking weight broke centre of gravity centre of tension column compute consequently constant quantity cube curve cylinder deductions denote Depth in inches diameter dimensions direct cohesion distance Ditto elasticity element of deflection English oak equal feet fibres Fir Battens force of direct former formula fulcrum Galileo Girard given horizontal hypothesis inches square inversely investigation James Bernoulli last weight latter Leibnitz Length in inches lever loaded Mean Weight metres middle nearly neutral axis observed obvious periments PETER BARLOW pieces pine pitch pine plate position principal proportional props ratio Red pine reduced to Sp REMARKS resistance specific gravity specimen square inch supported supposed TABLE Teak theory thickness timber tion transverse strain triangular beam ultimate deflection upwards vertical vertical strength wall Weight in lbs Whence whole